The Galaxy S3 Mini is a stripped down version of Samsung’s best-seller the Galaxy S3. The S3 Mini features 4.0-inch WVGA(480×800) capacitive touch screen display, 1 GHz dual-core processor, Android 4.1 (Jelly Bean) OS, 5MP Auto Focus Camera with LED Flash, 1GB RAM, 8 GB / 16GB internal memory, and a 1,500mAh battery. Quite recently, Samsung started the Android 4.1.2 Jelly Bean roll out for the device. The new update is already available to all S3 Mini users via Kies and Over-the-Air.
If you have missed the official update, you can check for its availability for your device from Settings > About > Software Update. To update your device via OTA, it is recommended that you are connected with a WiFi Network. In case, you are facing problems in getting the Android 4.1.2 update on your Samsung Galaxy S3 Mini GT-I8190, you can download the full firmware from the link provided below and install it. Since the firmwares provided below are Unbranded you can flash it even if you do not belong to Indonesia or Vietnam.
Ukraine (Kyivstar): I8190XXAMA2_I8190QXEAMA1_SEK.zip
Austria (Orange): I8190XXAMA2_I8190QXXAMA1_ONE.zip
Luxembourg (La Fleur): I8190XXAMA2_I8190QUXAMA1_LUX.zip
Poland (Play): I8190XXAMA2_I8190PRTAMA1_PRT.zip
Russia (La Fleur): I8190XXAMA2_I8190QXEAMA1_SER.zip
Open Austria: I8190XXAMA2_I8190OXXAMA2_ATO.zip
Before proceeding to install the firmware, do these things:
Having made the preparations instructed above, follow the following steps:
Do not forget to how it went for you via comments!
How to Root Galaxy S3 Mini GT-I8190: Link